LEO satellite formation for SSP : energy and doppler analysis
The space-based solar power (SBSP) concept was introduced during the 1970s. However, the technological challenges during that period stalled its development. Decaying natural energy resources, global warming, and geopolitical pressures have encouraged many countries and researchers to seek new relia...
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sg-ntu-dr.10356-1003882020-03-07T14:00:33Z LEO satellite formation for SSP : energy and doppler analysis Goh, Shu Ting Zekavat, Seyed Alireza Abdelkhalik, Ossama School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Electronic systems The space-based solar power (SBSP) concept was introduced during the 1970s. However, the technological challenges during that period stalled its development. Decaying natural energy resources, global warming, and geopolitical pressures have encouraged many countries and researchers to seek new reliable energy sources, such as SBSP. A solar power technology that comprises low Earth orbit (LEO) spacecraft formation has been proposed in the literature. All spacecraft in the LEO formation harvest solar energy and transmit the power to a leader spacecraft or the ground station simultaneously. In the proposed LEO technique, the high and varying relative speed within the spacecraft formation, and also within the spacecraft and the Earth, causes a nonhomogeneous Doppler spread during solar power transmission. This Doppler spread reduces SBSP power transmission efficiency. In this paper, first, the transmission link budget from LEO and geostationary orbits to the Earth are compared, and the harvested energy by the ground station on the Earth is investigated. This motivates low or mid Earth orbit satellite usage for SBSP. Next, considering different spacecraft configurations, the impact of the distance between each spacecraft and the ground station, and the distance between each spacecraft and the leader spacecraft on the variation of the Doppler frequency spread is investigated. In addition, the impact of the position of the leader spacecraft with respect to other spacecraft in the formation is studied. The results confirm that higher altitude or smaller formation size leads to lower Doppler frequency spread in the transmission between each spacecraft to the ground station (or leader spacecraft). Finally, several possible techniques to improve the wireless power transmission efficiency due to the Doppler effect are discussed and compared. Accepted version 2015-06-02T01:14:54Z 2019-12-06T20:21:33Z 2015-06-02T01:14:54Z 2019-12-06T20:21:33Z 2015 2015 Journal Article Goh, S. T., Zekavat, S. A., & Abdelkhalik, O. (2015). LEO satellite formation for SSP : energy and doppler analysis. IEEE transactions on aerospace and electronic systems, 51(1), 18-30. 0018-9251 https://hdl.handle.net/10356/100388 http://hdl.handle.net/10220/25711 10.1109/TAES.2014.120333 177148 en IEEE transactions on aerospace and electronic systems © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: [http://dx.doi.org/10.1109/TAES.2014.120333]. 12 p. application/pdf |
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DRNTU::Engineering::Electrical and electronic engineering::Electronic systems Goh, Shu Ting Zekavat, Seyed Alireza Abdelkhalik, Ossama LEO satellite formation for SSP : energy and doppler analysis |
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The space-based solar power (SBSP) concept was introduced during the 1970s. However, the technological challenges during that period stalled its development. Decaying natural energy resources, global warming, and geopolitical pressures have encouraged many countries and researchers to seek new reliable energy sources, such as SBSP. A solar power technology that comprises low Earth orbit (LEO) spacecraft formation has been proposed in the literature. All spacecraft in the LEO formation harvest solar energy and transmit the power to a leader spacecraft or the ground station simultaneously. In the proposed LEO technique, the high and varying relative speed within the spacecraft formation, and also within the spacecraft and the Earth, causes a nonhomogeneous Doppler spread during solar power transmission. This Doppler spread reduces SBSP power transmission efficiency. In this paper, first, the transmission link budget from LEO and geostationary orbits to the Earth are compared, and the harvested energy by the ground station on the Earth is investigated. This motivates low or mid Earth orbit satellite usage for SBSP. Next, considering different spacecraft configurations, the impact of the distance between each spacecraft and the ground station, and the distance between each spacecraft and the leader spacecraft on the variation of the Doppler frequency spread is investigated. In addition, the impact of the position of the leader spacecraft with respect to other spacecraft in the formation is studied. The results confirm that higher altitude or smaller formation size leads to lower Doppler frequency spread in the transmission between each spacecraft to the ground station (or leader spacecraft). Finally, several possible techniques to improve the wireless power transmission efficiency due to the Doppler effect are discussed and compared. |
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School of Electrical and Electronic Engineering |
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School of Electrical and Electronic Engineering Goh, Shu Ting Zekavat, Seyed Alireza Abdelkhalik, Ossama |
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Article |
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Goh, Shu Ting Zekavat, Seyed Alireza Abdelkhalik, Ossama |
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Goh, Shu Ting |
title |
LEO satellite formation for SSP : energy and doppler analysis |
title_short |
LEO satellite formation for SSP : energy and doppler analysis |
title_full |
LEO satellite formation for SSP : energy and doppler analysis |
title_fullStr |
LEO satellite formation for SSP : energy and doppler analysis |
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LEO satellite formation for SSP : energy and doppler analysis |
title_sort |
leo satellite formation for ssp : energy and doppler analysis |
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2015 |
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https://hdl.handle.net/10356/100388 http://hdl.handle.net/10220/25711 |
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1681048129904836608 |